Ash-sifter.



Patented Mar 6, 1900.

a. P. mnmsow.

ASH SEFTER. (Application filed June 19, 1995.1

(MB Model.)

'HIWHI m M u.

VY MM 2 is a front view of the same.

UNITED STATES TATENT OFFICE.

GEORGE PRENTICE HARRISON, OF BUFFALO, NEWV YORK.

ASH-SIFTER.

SPECIFICATION forming part of Letters Patent No. 644,800, dated March 6, 1900. Application filed June 10,1898. Serial No. 683,107. (No model.)

To to, whom it may concern:

Be it known that l, GEORGE PRENTICE HAR- RISON, a subject of the Queen of Great Britain, residing at Buffalo, in the county of Erie, State of New York, have invented a certain new and useful Improvement in Ash-Sifters, of which the following is a specification, reference being had to the accompanying drawlngs.

This improvement relates to that class of sitters in which the materials to be sifted are poured into a rotary screen which is revolved in one direction to separate the fine material from the coarse and then turned in the opposite direction to dump the contents of the screen.

The invention consists in the peculiar construction hereinafter more particularly described and then definitely claimed at the end hereof.

In the accompanying drawings, Figure 1 is a vertical central crossfsection of a sifter constructed according to my improvement. Fig.

Fig. 3 is a perspective detail which will be more fully referred to hereinafter.

Referring now to the details of the drawings by numerals, 1 indicates the sides of the sifter, which maybe of wood or any suitable material and to which is secured the back 2 and front 3, preferably of sheet metal. At thetop of the back is hinged a lid 4, which shuts down on the top of the front and is provided with a fastener 5 to keep it closed. At the top of each side a strip of felt 6 is attached to make a tighter joint between the lid and the sides.

At 7 a chute is shown having side strips 8 to guide the material passing over it toward the center. The chute is pivoted to the sides by the cross-bar 9 and may be closed up, as shown in dotted lines in Fig. 1. In this position it closes tight against the front 3 and against strips 10, secured to the sides. To keep the chute in this position, I employ a wire fastener 11, (shown detached in Fig. 3,) which can be turned inward, as shown in dotted lines in Fig. l, to admit of the chute being shut and then turned back to bring the bends 12 behind the chute, so as to close the latter tight against the rear side of the front.

When the fastening is in the latter position,an endwise motion is given to it which will bring the bent end 13 in front of one of the strips 10, thus keeping the bends 12 from going backward and holding the chute tight against the front.

Over the opening for the chute is a strip 14., which will prevent any dust from falling be tween the top of the chute and the front in case the chute should not be closed tight.

At the back of the chute is a stationary screen 15, the lower edge of which is provided with an offset 16 to allow the edge of the chute to fit in it, so as to prove no impediment to the cinders in passing out.

Passing through both side pieces is a rod or shaft 17, having at one end a crank 18. On this shaft is mounted the rotary screen 19, comprising two heads 20 and the screen ma terial 21, one end of which is attached to the shaft, from which it passes over a rod 22 and from thence around the circumference of the screen to the strips 23, between which the other end is secured.

For convenience in moving the sifter I provide it with a bail 24, whose lower ends fit around the ends of the shaft 17.

The operation is as follows: The chute being closed, as shown in dotted lines in Fig. 1, and the lid opened, the screen is turned until the opening in it is at the top. The ashes, &c., are then poured in, the lid closed, and cylinder rotated in the direction of the arrow until the ashes are sifted. The chute is now opened, as shown in full lines in Fig. 1, and the screen rotated in the opposite direction, which will cause the cinders to drop out of the opening upon the screen 15 and chute 7, from whence they pass out to any suitable receptacle.

I deem the peculiar arrangement of the chute inside the casing, so as to shut against the inside thereof,as important, because when thus arranged it performs the double function of a door and chute.

I have shown in the drawings the screening apparatus proper without any receptacle for the ashes, as it may be used in different ways. It may be provided with a cover to fit overa barrel or be set just as it is in a box or any other convenient receptacle,

I do not intend to limit myself to the use of myoinvention in sifting ashes, as it is evident that it may be used for a Variety of purposes.

What I claim as new is- The combination in a sifter, of a casing and a door shutting against the inside of said casing,- with a wire fastener 11 sliding and swinging in suitable bearings in said casing and having bends formed in the body of the wire between the bearings and arranged to swing against the door and thus fasten the same, said fastener having one of its ends bent downward and then at right angles to the first bend, so as to enter the side of the cas ing to lock the door fast, substantially as described.

In testimony whereof I affix my signature, in the presence of two witnesses, this 4th day of June, 1898.

GEORGE PRENTICE HARRISON.

Witnesses:

CHARLES K. ROBINSON, HENRY G. MIDDAUGH 

